Outbound mail delays in EU region

Update timeline

1. investigating Mar 31, 2026, 11:17 AM UTC

   We have detected a delay in outbound message processing in the Inky EU regions.

2. identified Mar 31, 2026, 11:25 AM UTC

   Inky Operations have identified what we believe is the issue and have taken corrective actions outbound mail delays should begin to return to normal levels.

3. monitoring Mar 31, 2026, 11:50 AM UTC

   Inky Engineers have restored normal mail processing times in the EU region and are monitoring to ensure stability.

4. resolved Mar 31, 2026, 01:07 PM UTC

   This incident has been resolved.

5. postmortem Apr 29, 2026, 03:54 PM UTC

   On March 31s, our dev team observed that an email filter host was having a disproportionate amount of traffic sent to it, that was slowing down the response time. This in turn caused additional pressure on some of our backend resources that were slowing down the email processing time. This traffic did not cause the service to crash and auto scaling did not occur due to the CPU processing of the items not breaking a threshold.